how to make a catapult with popsicle sticks rubber bands and a bottle cap

How To Create a DIY Catapult With Popsicle Sticks, Rubber Bands & A Bottle Cap

By John Jackson
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bonding with your kids and creating something extraordinary doesn't require expensive materials or advanced tools. A simple, fun project that you can whipped up with odds and ends from around the house is a DIY catapult. Using just popsicle sticks, rubber bands, and a bottle cap, you can create a delightful toy that will keep them engaged for hours. So, let's dive into how to make a catapult with these humble supplies.

This project is not only fun but also educational. It helps children understand basic physics principles like momentum and trajectory, all while fostering imagination and creativity. Plus, it's a great way to teach them about recycling and upcycling, showing them that old bottles and sticks can be transformed into something new and exciting.

Gathering Your Materials

Alfredo name, thanks for bringing this up. The first step in creating your popsicle stick catapult is gathering your materials. You'll need:

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an airplane made out of candy sticks and marshmallows on the ground with text overlay that reads craft stick catapult
an airplane made out of candy sticks and marshmallows on the ground with text overlay that reads craft stick catapult
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DIY Catapult Reading Game with Cardboard Sight Word Board!
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How to Make The Best Classic Catapult (With Free Science Printables)
  • 10-12 large popsicle sticks
  • 8-10 rubber bands (various sizes)
  • 1 empty plastic bottle (like a water bottle)
  • 1 large bottle cap
  • Scissors
  • Glue (school glue or hot glue gun)
  • Something small and lightweight to launch, like a pompom or small beanbag.

Once you've gathered your materials, it's time to start building. Let's break down the process into simple, manageable steps.

Creating the Base

The base of your catapult will be the most stable part, so let's start with that. You'll use 4 popsicle sticks and the bottle cap to create a flat surface for your catapult.

a hand is placing toothbrushes in the shape of a triangle on top of a table
a hand is placing toothbrushes in the shape of a triangle on top of a table
Popsicle Stick Catapult
Popsicle Stick Catapult
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a wooden structure made to look like an airplane with wheels and wings on the front
  1. Lay out the 4 popsicle sticks in a line, side by side.
  2. Glue them together, making sure the grooves on the back line up. This will give your base stability.
  3. Once the glue is dry, place the bottle cap in the middle of the popsicle sticks. The cap should fit snugly. If it's too big, make some small cuts in the popsicle sticks to accommodate it.
  4. Glue the bottle cap to the popsicle sticks. Make sure it's secure and won't wobble.

While that's drying, let's start on the arm of your catapult.

Building the Arm

The arm of your catapult is where the action happens. It's the part that will launch your projectile. You'll need 6 popsicle sticks and some rubber bands for this.

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  1. Glue 3 popsicle sticks together, side by side. These will form the base of your arm.
  2. Glue another 3 popsicle sticks together, but make sure they're offset from the first set. This will give your arm some flexibility. You should have a "Z" shape when you look at it from the side.
  3. Once the glue is dry, you should have a "Z" shaped structure. The arm of your catapult should be able to bend up and down easily.

Now, let's attach the arm to the base.

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3 Easy DIY Popsicle Stick Catapults - Shelterness
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Popsicle Stick Catapult
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Build a Powerful Popsicle Stick Catapult - Frugal Fun For Boys and Girls
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Popsicle Sticks Catapult STEM Challenge

Assembling Your Catapult

Now that you have both the base and the arm, it's time to put them together. You'll use the remaining rubber bands to create the tension that will launch your projectile.

Attaching the Arm to the Base

Before you attach the arm to the base, make sure the bottle cap is facing the right way. The opening should be on the same side as the top of the "Z" on your arm.

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  1. Match up the base and the arm, so the bottom of the "Z" aligns with the bottle cap. The cap should fit inside the "Z".
  2. Use a large rubber band to connect the arm to the base. Wrap it around the top of the "Z" and the bottom of the base, making sure it's tight but not so tight that it breaks.
  3. Now, you should be able to bend the arm up and down. It should snap back into place when you let it go.

Almost done! Let's add some power to your catapult.

a wooden toy with a blue frisbee on top of it's stand
a wooden toy with a blue frisbee on top of it's stand
How To Build A Build A Popsicle Stick Catapult: Fun Kids Stem Activity
How To Build A Build A Popsicle Stick Catapult: Fun Kids Stem Activity
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two hands are holding something in one hand and the other is pulling on it with their fingers

Adding Power with Rubber Bands

The rubber bands you used to attach the arm to the base aren't just there to hold it in place. They also provide the power to launch your projectile. You can adjust the tension by adding or removing rubber bands.

  1. Wrap another rubber band around the top of the "Z". This will give your catapult some extra power.
  2. Add more rubber bands if you want more power, or take some away if you want less. Make sure the arm can bend easily.

Your catapult is now ready to use!

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Using Your Catapult

Before you start launching, make sure your catapult is on a stable surface. You don't want it tipping over. You can also experiment with different types of projectiles. Larger, heavier objects will go farther, while smaller, lighter ones will go higher.

Loading and Launching

To load your catapult:

  1. Bend the arm down and place your projectile in the bottle cap.
  2. Let go of the arm gently. It should snap back into place, launching your projectile.

Be careful where you point your catapult. You don't want to launch anything into the air that could fall back down and hit someone. Only launch towards open spaces, like a backyard or a park.

Remember, part of the fun of DIY projects is experimenting and learning. Don't be afraid to try different things with your catapult. Change the angle, change the projectile, or even add more rubber bands to see how it affects the launch. This is a chance for you and your kids to explore and learn together.

So, there you have it. A fun, educational, and eco-friendly project that you can make with just a few simple materials. Enjoy your homemade catapult, and happy launching! Who knows, maybe you'll be the next Da Vinci, launching poms in the name of science!

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